/**
 * util.js
 * general utility functions
 */
function getDistance(score, maxValue){
	var dist = 20*maxDistance*maxValue / ((maxDistance-20)*score + 20*maxValue);
	return dist;
}

function loading(msg){
	$('#loading-box').show();
	$('#message-box').html((msg) ? msg : "Fetching data...");
}	

function loaded(){
	$('#loading-box').hide();
	$('#message-box').empty();
}

function convertFBTimestamp(timestamp){
	var d = new Date();
	d.setTime(timestamp +  '000');
	return d;
}


/*
 * Functions for debugging
 */
function trace(msg){
	if(this.console && typeof this.console.log != "undefined"){
		console.log(msg);
	}
}

function trace2(msg){
	try{console.log(msg);}catch(e){}
}

/**
 * Function : dump()
 * Arguments: The data - array,hash(associative array),object
 *    The level - OPTIONAL
 * Returns  : The textual representation of the array.
 * This function was inspired by the print_r function of PHP.
 * This will accept some data as the argument and return a
 * text that will be a more readable version of the
 * array/hash/object that is given.
 * Docs: http://www.openjs.com/scripts/others/dump_function_php_print_r.php
 */
function dump(arr,level) {
	var dumped_text = "";
	if(!level) level = 0;
	
	//The padding given at the beginning of the line.
	var level_padding = "";
	for(var j=0;j<level+1;j++) level_padding += "    ";
	
	if(typeof(arr) == 'object') { //Array/Hashes/Objects 
		for(var item in arr) {
			var value = arr[item];
			
			if(typeof(value) == 'object') { //If it is an array,
				dumped_text += level_padding + "'" + item + "' ...\n";
				dumped_text += dump(value,level+1);
			} else {
				dumped_text += level_padding + "'" + item + "' => \"" + value + "\"\n";
			}
		}
	} else { //Stings/Chars/Numbers etc.
		dumped_text = "===>"+arr+"<===("+typeof(arr)+")";
	}
	return dumped_text;
}